diff --git a/matlab/Tutorials/CRLH_LeakyWaveAnt.m b/matlab/Tutorials/CRLH_LeakyWaveAnt.m
index ded07b1..7bbe29c 100644
--- a/matlab/Tutorials/CRLH_LeakyWaveAnt.m
+++ b/matlab/Tutorials/CRLH_LeakyWaveAnt.m
@@ -115,7 +115,6 @@ Sim_CSX = 'CRLH.xml';
 
 WriteOpenEMS( [Sim_Path '/' Sim_CSX], FDTD, CSX );
 CSXGeomPlot( [Sim_Path '/' Sim_CSX] );
-return
 RunOpenEMS( Sim_Path, Sim_CSX );
 
 %% post-processing
diff --git a/matlab/Tutorials/Simple_Patch_Antenna.m b/matlab/Tutorials/Simple_Patch_Antenna.m
index 569cdab..09d2d47 100644
--- a/matlab/Tutorials/Simple_Patch_Antenna.m
+++ b/matlab/Tutorials/Simple_Patch_Antenna.m
@@ -129,7 +129,7 @@ legend( 'real', 'imag' );
 % plot reflection coefficient S11
 figure
 uf_inc = 0.5*(U.FD{1}.val + I.FD{1}.val * 50);
-if_inc = 0.5*(I.FD{1}.val - U.FD{1}.val / 50);
+if_inc = 0.5*(I.FD{1}.val + U.FD{1}.val / 50);
 uf_ref = U.FD{1}.val - uf_inc;
 if_ref = if_inc - I.FD{1}.val;
 s11 = uf_ref ./ uf_inc;